Sentences with word «paleobotanist»

Scientists imagined they were big, but not that big, says William Stein, paleobotanist at Binghamton University in upstate New York.

It's «a beautiful little experiment,» says paleobotanist Peter Wilf of Pennsylvania State University in State College, who notes that the strategy gives mosses a way to propagate in dry places.

Paleobotanist Peter Wilf of the University of Michigan, Ann Arbor, came across Strong's research in 1998, when he was studying a different sort of insect damage — mysterious specks of fossilized material found on 53 - million - year - old fossil leaves from Wyoming.

In 1948, two paleobotanists from the Colorado School of Mines and Princeton University compared the texture of the fossil slab with that of green algae.

Park University paleobotanist Patty Ryberg and her colleagues are uncovering the fossilized remains of a lush forest that thrived in the Antarctic Circle some 260 million years ago during the Permian period.

But in cladoxylopsids, «each strand of xylem had its own growth rings,» says paleobotanist Christopher M. Berry of Cardiff University in Wales, who co-authored the study with colleagues at the Chinese Academy of Sciences in Nanjing and Binghamton University, S.U.N.Y.

I'm sure that there were important advances in our understanding of plant evolution in the last 25 years and that there are paleobotanists out there with thoughtful insights to share.

A recent study by two Italian paleobotanists, Carla Alberta Accorsi of the University of Modena and Luisa Forlani of the University of Bologna, however, has shown that whereas the upper sediment layers contain abundant evidence of aquatic plants, these signs are totally absent in the lower chaotic deposits, which hold plentiful quantities of pollen from forest trees.

Like Mellaart, paleobotanists Christine Hastorf and Julie Near of the University of California at Berkeley have found wheat, barley, lentils, and peas at Çatalhöyük.

The particular pollen they found in the insects» guts, says paleobotanist Bill Chaloner of the University of London, was adapted for wind dispersal, and the bugs could have «inadvertently consumed the pollen while foraging for other plant tissue.»

The question of when this relationship was first established in preangiosperm plants has intrigued paleobotanists for many years.

Jud consulted paleobotanist Leo J. Hickey, who collected the leaf fossil at Dutch Gap in 1974.

But 52 million years ago the giant coniferous evergreen tree known to botanists as Agathis thrived in the Patagonian region of Argentina, according to an international team of paleobotanists, who have found numerous fossilized remains there.

«To date, there are no fossil plants from this geological era that offer proof of the existence of ornithophily — i.e., the pollination of flowers through birds,» adds paleobotanist Wilde.

Now, however, the ornithologist from Frankfurt and his colleague, paleobotanist Dr. Volker Wilde, have found this evidence.

«Poor preservation of lacewing fossils had always stymied attempts to conduct a detailed morphological and ecological examination of the kalligrammatid,» says paleobotanist David Dilcher, a co-author on the study that identifies the insects.

But last May, paleobotanists at the Florida Museum of Natural History and at Jilin University in Changchun, China, announced fossil remains of «probably the most complete, oldest flowering plant in the world,» says David Dilcher, a scientist who analyzed the 125 - million - year - old fossils.

Your wife is a paleobotanist, and you two often work together.

Last April, Pfefferkorn and Wang, a paleobotanist with the Chinese Academy of Sciences, described the full magnitude of the find: an entire swath of ancient swamp forest frozen in time beneath more than 20 square miles of volcanic ash.

Brigitte Meyer - Berthaud, a paleobotanist at the French National Center for Scientific Research, who did not participate in this work, explains that these trees were among «the major carbon reservoirs of the Paleozoic,» a time period from 542 million to 251 million years ago.

Jeffrey Benca, a paleobotanist at the University of California, Berkeley, and his colleagues exposed plantings of modern dwarf pine tree (Pinus mugo) to varying levels of UV - B radiation.

«Explaining these glaciations has always been a problem,» says Charles Wellman, a paleobotanist at the University of Sheffield in the United Kingdom, who was not involved in the new work.

«I think they're perfectly right,» says Gregory Retallack, a paleobotanist at the University of Oregon, Eugene.

Now researchers may be able to get around this lack of fossils by looking at insect damage instead, says Leo Hickey, a paleobotanist at Yale University: «The work shows the potential of an overlooked resource in [studying] the evolution of insects.»

University of Maryland doctoral student Nathan Jud, a paleobotanist — an expert in plant fossils and their environments — identified the species and its significance.

The new study is an important step in solving several such mysteries about early Earth, says Brigitte Meyer - Berthaud, a paleobotanist at the University of Montpellier in France who was not involved in the research.

«The importance of vein density has never before been so clearly presented,» says Peter Wilf, a paleobotanist at Pennsylvania State University, University Park.

I also remember it was the pollen from the European Hornbeam that tipped the paleobotanist's off to the correct time of year in which this famous 5000 year old hiker, or sheep herder died.

Paleobotanists, for example, use plant matter to characterize the ancient atmosphere — they are almost literally reading tea leaves.

Since the time of Hansen's 1988 «hockey stick», numerous climatologist, paleoclimatologist, paleologist, paleobotanist, solar physicists, and archeologists just to name a few, have clearly shown Hansen's work to be flawed.